专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06379611B1 High strength, low alloy, heat resistant steel 有权
标题翻译：高强度，低合金，耐热钢
公开(公告)号：US06379611B1
公开(公告)日：2002-04-30
申请号：US09641683
申请日：2000-08-18
申请人： Nobuyoshi Komai , Fujimitsu Masuyama , Tomomitsu Yokoyama , Hiroyuki Hirata , Kaori Kawano , Takao Kan
发明人： Nobuyoshi Komai , Fujimitsu Masuyama , Tomomitsu Yokoyama , Hiroyuki Hirata , Kaori Kawano , Takao Kan
IPC分类号： C22C3822
CPC分类号： B23K35/308 , B23K35/3093 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28
摘要： A high strength, low alloy, heat resistant steel having excellent weldability has an average crystal grain diameter of at most 110 &mgr;m and consists essentially of, by mass %: C: 0.03-0.15%, Si: at most 1%, Mn: at most 2%, P: at most 0.03%, S: at most 0.03%, Ni: at most 0.5%, Cu: at most 0.5%, Cr: 1.8-2.8%, V: 0.1-0.3%, Nb: 0.01-0.08%, Mo: 0.05-0.35%, W: 1.2-1.8%, Ti: 0.001-0.05%, B: 0-0.02%, Al: at most 0.1%, O: at most 0.1%, N: in an amount satisfying the formula [%N]≦[%Ti]+5[%B]+0.004, and a remainder of unavoidable impurities.
摘要翻译：焊接性优异的高强度，低合金，耐热钢的平均结晶粒径为110μm以下，质量％以C：0.03〜0.15％，Si：1％以下，Mn：at 最多2％，P：0.03％以下，S：0.03％以下，Ni：0.5％以下，Cu：0.5％以下，Cr：1.8〜2.8％，V：0.1-0.3％，Nb： 0.08％，Mo：0.05-0.35％，W：1.2-1.8％，Ti：0.001-0.05％，B：0-0.02％，Al：至多0.1％，O：0.1％以下，N：满足公式[％N] <= [％Ti] +5 [％B] +0.004，剩余的不可避免的杂质。

2. 发明授权

US5746843A Low Mn-low Cr ferritic heat resistant steel excellent in strength at elevated temperatures 失效
标题翻译：低Mn低Cr铁素体耐热钢，高温强度优良
公开(公告)号：US5746843A
公开(公告)日：1998-05-05
申请号：US799041
申请日：1997-02-10
申请人： Kaori Miyata , Masaaki Igarashi , Fujimitsu Masuyama , Nobuyoshi Komai , Tomomitsu Yokoyama
发明人： Kaori Miyata , Masaaki Igarashi , Fujimitsu Masuyama , Nobuyoshi Komai , Tomomitsu Yokoyama
IPC分类号： C22C38/00 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/54 , C22C38/44
CPC分类号： C22C38/26 , C22C38/22 , C22C38/24 , C22C38/28 , C22C38/32
摘要： A low Mn-low Cr ferritic heat resistant steel consisting essentially of, in weight %: 0.02-0.20% C, up to 0.7% Si, less than 0.1% Mn, up to 0.8% Ni, 0.8-3.5% Cr, 0.01-3.0% W, 0.1-0.5% V, 0.01-0.20% Nb, 0.001-0.05% Al, 0.0005-0.05% Mg, 0.0005-0.01% B, less than 0.05% N, up to 0.03% P, up to 0.015% S, 0.001-0.05% Ti and the balance Fe and incidental impurities, wherein the B content is defined so as to satisfy the following formula (14/11)B>N-N(V/51)/{(C/12)+(N/14)}-N(Nb/93)/{(C/12)+(N/14)}-N(Ti/48)/{C/12)+(N/14)}. The steel can further contain optionally 0.01-1.5% Mo, and/or one or more elements selected from the group consisting of 0.01-0.2% La, 0.01-0.2% Ce, 0.01-0.2% Y, 0.01-0.2% Ca, 0.01-0.2% Ta and 0.01-0.2% Zr. The steel can be used in place of the austenitic steels or high Cr ferritic steels, since it has remarkably improved toughness, workability and weldability, and excellent creep properties at elevated temperatures.
摘要翻译：低Mn低Cr铁素体耐热钢，主要由重量％：0.02-0.20％C，高达0.7％的Si，小于0.1％的Mn，至多0.8％的Ni，0.8-3.5％的Cr，0.01- 3.0％W，0.1-0.5％V，0.01-0.20％Nb，0.001-0.05％Al，0.0005-0.05％Mg，0.0005-0.01％B，小于0.05％N，最高0.03％P，最高0.015％ S，0.001-0.05％Ti，余量为Fe和杂质，其中B含量定义为满足下式（14/11）B> NN（V / 51）/ {（C / 12）+（ N / 14）} -N（Nb / 93）/ {（C / 12）+（N / 14）} -N（Ti / 48）/ {C / 12）+（N / 14）}。钢可以进一步含有0.01-1.5％的Mo，和/或一种或多种选自0.01-0.2％La，0.01-0.2％Ce，0.01-0.2％Y，0.01-0.2％Ca，0.01 -0.2％的Ta和0.01-0.2％的Zr。钢可用于代替奥氏体钢或高Cr铁素体钢，因为它具有显着提高的韧性，可加工性和焊接性，并且在高温下具有优异的蠕变性能。

3. 发明授权

US5814274A Low-Cr ferritic steels and low-Cr ferritic cast steels having excellent high teperature strength and weldability 失效
标题翻译：低Cr铁素体钢和低Cr铁素体铸钢，具有优异的高剥离强度和可焊性
公开(公告)号：US5814274A
公开(公告)日：1998-09-29
申请号：US803595
申请日：1997-02-21
申请人： Nobuyoshi Komai , Fujimitsu Masuyama , Tomomitsu Yokoyama
发明人： Nobuyoshi Komai , Fujimitsu Masuyama , Tomomitsu Yokoyama
IPC分类号： C22C38/46 , C22C38/48 , C22C38/54 , C22C38/44
CPC分类号： C22C38/48 , C22C38/46 , C22C38/54
摘要： This invention provides low-Cr ferritic steels and low-Cr ferritic cast steels having excellent high-temperature strength and weldability. These low-Cr ferritic steels and low-Cr ferritic cast steels consist essentially of, on a weight percentage basis, 0.03 to 0.12% C, 0.05 to 0.7% Si, 0.05 to 1% Mn, 0.002 to 0.025% P, 0.001 to 0.015% S, 0.3 to 3% Cr, 0.01 to 1% Ni, 0.05 to 3% Mo, 0.01 to 0.5% V, 0.1 to 3% W, 0.01 to 0.2% Nb, 0.02 to 1.5% Re, 0.003 to 0.05% Al, 0.0001 to 0.01% B, 0.003 to 0.03% N, and the balance being Fe and incidental impurities, and have excellent high-temperature strength and weldability.
摘要翻译：本发明提供具有优异的高温强度和可焊性的低Cr铁素体钢和低Cr铁素体铸钢。这些低Cr铁素体钢和低Cr铁素体铸钢基本上由重量百分比组成，0.03〜0.12％C，0.05〜0.7％Si，0.05〜1％Mn，0.002〜0.025％P，0.001〜0.015 ％S，0.3〜3％Cr，0.01〜1％Ni，0.05〜3％Mo，0.01〜0.5％V，0.1〜3％W，0.01〜0.2％Nb，0.02〜1.5％Re，0.003〜0.05％，0.0001〜0.01％B，0.003〜0.03％N，余量为Fe和杂质，具有优异的高温强度和焊接性。

4. 发明授权

US5945064A Welding material for low chromium (Cr) ferritic steel having high toughness 失效
标题翻译：具有高韧性的低铬（Cr）铁素体钢的焊接材料
公开(公告)号：US5945064A
公开(公告)日：1999-08-31
申请号：US57813
申请日：1998-04-09
申请人： Nobuyoshi Komai , Takayuki Kawano , Fujimitsu Masuyama , Iwami Ishihara , Tomomitsu Yokoyama
发明人： Nobuyoshi Komai , Takayuki Kawano , Fujimitsu Masuyama , Iwami Ishihara , Tomomitsu Yokoyama
IPC分类号： C22C38/00 , B23K35/30 , C22C38/22 , C22C38/32 , C22C38/54 , F28F21/08 , C22C38/44 , C22C38/48
CPC分类号： F28F21/082 , B23K35/308 , C22C38/22 , C22C38/32
摘要： This invention provides a welding material for low chromium (Cr) ferritic heat-resisting steel having high toughness, wherein the chemical composition of welding metal comprises, in weight %, carbon (c) 0.04-0.1%, silicon (Si) 0.1-0.6%, manganese (Mn) 0.1-0.6%, phosphorus (P) 0.0005-0.03%, sulfur (S) 0.0005-0.015%, chromium (Cr) 1.75-2.5%, nickel (Ni) 0.01-0.8%, molybdenum (Mo) 0.05-1.5%, vanadium (V)0.01-0.5%, tungsten (W) 0.05-2%, niobium (Nb) 0.01-0.2%, tantalum (Ta) 0.01-0.5%, aluminum (Al) 0.003-0.05%, boron (B) 0.0001-0.01%, nitrogen (N) 0.003-0.03%, and the remainder comprises iron and inevitable impurities. The welding material satisfies the following formula: C+Cr/20+Mo/15+V/10+W/7+5B.ltoreq.0.8%. According to this invention, the welding material is suitable for welding low Cr ferritic heat-resisting steels having high strength such as those used in steam generators and heat exchangers of boilers, etc. which are exposed to high temperatures and high pressures, more particularly, at a high temperature of 500.degree. C. or more.
摘要翻译：本发明提供一种具有高韧性的低铬（Cr）铁素体耐热钢的焊接材料，其中焊接金属的化学组成按重量％计含有碳（c）0.04-0.1％，硅（Si）0.1-0.6 ％，锰（Mn）0.1-0.6％，磷（P）0.0005-0.03％，硫（S）0.0005-0.015％，铬（Cr）1.75-2.5％，镍（Ni）0.01-0.8％）0.05-1.5％，钒（V）0.01-0.5％，钨（W）0.05-2％，铌（Nb）0.01-0.2％，钽（Ta）0.01-0.5％，铝（Al）0.003-0.05％，硼（B）0.0001-0.01％，氮（N）0.003-0.03％，其余为铁和不可避免的杂质。焊接材料满足下列公式：C + Cr / 20 + Mo / 15 + V / 10 + W / 7 + 5B≤0.8％。根据本发明，焊接材料适用于焊接高温度的低Cr铁素体耐热钢，例如在高温高压的蒸汽发生器和锅炉等的热交换器中使用的低铁素体耐热钢，更具体地说，在500℃以上的高温下。

5. 发明授权

US06935552B2 High-precision method and apparatus for evaluating creep damage 有权
标题翻译：用于评估蠕变损伤的高精度方法和装置
公开(公告)号：US06935552B2
公开(公告)日：2005-08-30
申请号：US10256137
申请日：2002-09-27
申请人： Nobuyoshi Komai , Fujimitsu Masuyama , Masahiro Kobayashi
发明人： Nobuyoshi Komai , Fujimitsu Masuyama , Masahiro Kobayashi
IPC分类号： G01N23/203 , G01M99/00 , G01N15/10 , G01N17/00 , G01N23/225 , G01N33/20 , B23K31/12
CPC分类号： G01N23/2251 , G01N17/006
摘要： A high-precision method for evaluating creep damage of high tension heat resistant steel used in high temperature exposed apparatuses involves comparing particle size behavior varying with creep damage progress of crystal grains having a crystal orientation difference of about 2 degrees or more, preferably 3 degrees or more at an evaluated part on the basis of a working curve or a working map prepared in advance by looking for the relation of grain sizes to creep damage extent. A high-precision apparatus evaluates the creep damage of high tension heat resistant steel used in high temperature exposed apparatuses. A measuring device measures particle size variation behavior of crystal grains or sub grains having a crystal orientation difference of about 2 degrees or more with regard to a specimen at the evaluated part of high tension heat resistant steel and a working curve or a working map prepared in advance by looking for the relation of the grain sizes with respect to the creep damage extent (including creep damage rates) at every level of loaded stress. The creep damage extent is evaluated by comparing the grain size variation behavior measured by the measuring device with a working curve or a working map selected on the basis of loaded stress.
摘要翻译：用于评估在高温暴露设备中使用的高张力耐热钢的蠕变损伤的高精度方法包括比较晶体取向差为约2度以上，优选为3度的晶粒的蠕变损伤进展变化的粒径行为，或基于工作曲线或预先准备的工作图，通过查找颗粒尺寸与蠕变损伤程度的关系，更多地在评估部分。高精度设备评估高温暴露设备中使用的高张力耐热钢的蠕变损伤。测量装置测量在高耐力钢的评估部分的试样和具有约2度或更高的晶体取向差的晶粒或亚晶粒的粒度变化行为，以及制备的工作曲线或工作图通过寻找在每个负载应力水平下的颗粒尺寸与蠕变损伤程度（包括蠕变损伤率）的关系。通过将测量装置测量的粒度变化行为与基于加载应力选择的工作曲线或工作图进行比较来评估蠕变损伤程度。

6. 发明授权

US06919534B2 Welded joints in high strength, heat resistant steels, and a welding method therefor 有权
标题翻译：高强度耐热钢焊接接头及其焊接方法
公开(公告)号：US06919534B2
公开(公告)日：2005-07-19
申请号：US10140261
申请日：2002-05-08
申请人： Nobuyoshi Komai , Fujimitsu Masuyama , Yasuhiro Ukeguchi , Fumio Nishi
发明人： Nobuyoshi Komai , Fujimitsu Masuyama , Yasuhiro Ukeguchi , Fumio Nishi
IPC分类号： B23K9/23 , B23K9/00 , B23K9/02 , B23K9/095 , B23K31/00 , B23K33/00
CPC分类号： B23K33/004 , B23K9/0026 , B23K9/0216
摘要： A welding method and a welded joint for high strength, temperature resistant steels produce the same strength as the base metal in the welded joint, thereby resolving strength problems in the heat affected area by making a simple change to the welding method. Additionally, this advantage is extended to high strength ferrite heat resistant steels by providing a multi-pass buildup welding method for such high strength ferrite heat resistant steels. A multi-layered cap 15a fusion area extends past the heat affected area 13 that lies outside groove 11, and the surface area of the foregoing extension that is required to impart the same level of creep strength as is inherent in the base metal is based on the relationship between the groove width and the base metal thickness shown as hatched area in FIG. 1(B).
摘要翻译：用于高强度耐热钢的焊接方法和焊接接头产生与焊接接头中的贱金属相同的强度，从而通过简单地改变焊接方法来解决热影响区域的强度问题。另外，通过对这种高强度的铁氧体耐热钢提供多通道积层焊接方法，可以将这种优点扩展到高强度的铁素体耐热钢。多层盖15的融合区域延伸穿过位于凹槽11外部的热影响区域13，并且所需延伸部分所需的表面积与基底金属中固有的相同程度的蠕变强度基于关于槽宽度和基体金属厚度之间的关系，如图1中阴影区域所示。 1（B）。

7. 发明申请

US20150019142A1 DAMAGE EVALUATION METHOD AND MAINTENANCE EVALUATION INDEX DECISION METHOD 有权
标题翻译：损害评估方法和维护评估指标决策方法
公开(公告)号：US20150019142A1
公开(公告)日：2015-01-15
申请号：US14241560
申请日：2012-09-07
申请人： Nobuyoshi Komai , Hiroaki Fukushima , Yuichi Hirakawa , Hiroyuki Ohyama , Takeshi Miyazawa , Hiroaki Yoshida
发明人： Nobuyoshi Komai , Hiroaki Fukushima , Yuichi Hirakawa , Hiroyuki Ohyama , Takeshi Miyazawa , Hiroaki Yoshida
IPC分类号： G01N17/00 , G01N33/20 , G01M3/00
CPC分类号： G01N17/00 , G01M3/00 , G01M5/0033 , G01N33/20 , G01N2203/0296
摘要： A first measured value of a specific physical quantity at a target portion is correlated with a damage evaluation index to calculate a damage degree corresponding to the first measured value. The specific physical quantity is measured at least once at a position corresponding to the first measurement position in another time period having a different usage elapsed time from that of the first measurement, and these second and subsequent measured values are correlated with damage degrees calculated based on temporal changes corresponding to the second and subsequent measurements. A new damage evaluation index is approximately calculated based on a relationship between the first, second, and subsequent measured values and the damage degrees corresponding to the first, second, and subsequent measured values.
摘要翻译：在目标部分处的特定物理量的第一测量值与损伤评估指数相关联，以计算与第一测量值相对应的损伤程度。特定物理量在与第一测量的使用时间不同的另一时间段中的与第一测量位置相对应的位置处至少测量一次，并且这些第二和随后的测量值与基于对应于第二次和随后的测量的时间变化。基于第一，第二和随后的测量值与对应于第一，第二和后续测量值的损伤度之间的关系近似地计算新的损伤评估指数。

8. 发明授权

US09689789B2 Damage evaluation method and maintenance evaluation index decision method 有权
公开(公告)号：US09689789B2
公开(公告)日：2017-06-27
申请号：US14241560
申请日：2012-09-07
申请人： Nobuyoshi Komai , Hiroaki Fukushima , Yuichi Hirakawa , Hiroyuki Ohyama , Takeshi Miyazawa , Hiroaki Yoshida
发明人： Nobuyoshi Komai , Hiroaki Fukushima , Yuichi Hirakawa , Hiroyuki Ohyama , Takeshi Miyazawa , Hiroaki Yoshida
IPC分类号： G01B3/44 , G01N17/00 , G01M5/00 , G01M3/00 , G01N33/20
CPC分类号： G01N17/00 , G01M3/00 , G01M5/0033 , G01N33/20 , G01N2203/0296
摘要： A first measured value of a specific physical quantity at a target portion is correlated with a damage evaluation index to calculate a damage degree corresponding to the first measured value. The specific physical quantity is measured at least once at a position corresponding to the first measurement position in another time period having a different usage elapsed time from that of the first measurement, and these second and subsequent measured values are correlated with damage degrees calculated based on temporal changes corresponding to the second and subsequent measurements. A new damage evaluation index is approximately calculated based on a relationship between the first, second, and subsequent measured values and the damage degrees corresponding to the first, second, and subsequent measured values.

9. 发明申请

US20110239960A1 TUBE ARRANGEMENT FITTING FOR HEAT TRANSFER TUBES 审中-公开
标题翻译：用于传热管的管道安装配件
公开(公告)号：US20110239960A1
公开(公告)日：2011-10-06
申请号：US13139630
申请日：2009-12-24
申请人： Nobuyoshi Komai , Takeshi Miyazawa , Kiyotaka Aoki , Sachio Iwamoto , Masahiro Kobayashi
发明人： Nobuyoshi Komai , Takeshi Miyazawa , Kiyotaka Aoki , Sachio Iwamoto , Masahiro Kobayashi
IPC分类号： F22B37/24 , F16L3/22
CPC分类号： F22B37/205
摘要： Deflection (bend) in the length direction due to a difference in the heat expansion between two plate-like members, between which rows of heat transfer tubes are sandwiched, is reduced, and deflection (bend) of rows of heat transfer tubes is prevented. Two long plate-like members, in which a plurality of cutouts along the longitudinal direction are provided in one side the widthwise direction, are provided, and each of the cutouts includes two rectilinear sections that extend in a direction perpendicular to the longitudinal direction axis of the plate-like members, and a semicircular section that links one end of the rectilinear sections together. The distance between the two rectilinear sections along the lengthwise direction axis of the plate-like members and the diameter of the semicircular section is set so as to be greater than the diameter of the heat transfer tubes that are contained within the cutouts. Tongue sections are provided both between adjacent cutouts and between the cutouts positioned at both end portions of the plate-like members in the length direction and both side surfaces of the plate-like members in the lengthwise direction.
摘要翻译：由于夹在传送管排之间的两个板状构件之间的热膨胀差异，在长度方向上的偏转（弯曲）减小，并且防止了传送管排的偏转（弯曲）。设置有沿长度方向的一侧设置有沿着长度方向的多个切口的两个长的板状构件，并且每个切口包括两个直线部分，该直线部分沿垂直于纵向方向轴线的方向延伸板状构件和将直线段的一端连接在一起的半圆形部分。沿着板状构件的长度方向轴线的两个直线部分之间的距离和半圆形部分的直径被设定为大于包含在切口内的传热管的直径。在相邻的切口之间以及位于板状构件的长度方向的两个端部的切口和板状构件的长度方向的两个侧面之间设置舌部。

10. 发明申请

US20100307429A1 WELDING STRUCTURE OF TUBE STUBS AND TUBE HEADER 审中-公开
标题翻译：管和管头的焊接结构
公开(公告)号：US20100307429A1
公开(公告)日：2010-12-09
申请号：US12811450
申请日：2009-09-30
申请人： Nobuyoshi Komai , Takeshi Miyazawa , Fumio Nishi , Takumi Tokiyoshi , Nobuhiko Saito , Toshiyuki Imazato , Masahiko Hokano
发明人： Nobuyoshi Komai , Takeshi Miyazawa , Fumio Nishi , Takumi Tokiyoshi , Nobuhiko Saito , Toshiyuki Imazato , Masahiko Hokano
IPC分类号： F22B37/10
CPC分类号： F28F9/182 , B23K2101/14 , F22B37/104 , F22B37/22 , F28F9/18 , F28F21/082 , F28F2265/26
摘要： In order to provide a welding structure of a tube header and tube stubs which successfully improves the durability thereof against creep and fatigue damage of the tube stubs without interposing a component of a different material between the tube header and the tube stubs, i.e. requiring additional components, a welding structure of the present invention comprises: a tube header (2) being made of ferritic heat resisting steel; a plurality of tube stubs (4) which are welded onto an outer surface of the tube header, each of the tube stubs having a bended section, in which the plurality of tube stubs (4) are made of austenite stainless steel, and welded to the tube header (2) by using nickel base alloy as a welding material. Moreover annular chases (10) are respectively formed on the outer surface of the tube header (2) to surround welding portions of the tube header (2); joining portions (14) are formed on an inner side of the annular chases (10); butt grooves are formed by joining surfaces of the tube stubs (4) and the joining portions (14) in a continuous manner and welded by using the nickel base alloy as a welding material, the tube stubs having a diameter substantially same as those of the joining portions.
摘要翻译：为了提供管集管和管桩的焊接结构，其成功地提高了其对管桩的蠕变和疲劳损伤的耐久性，而不在管集管和管桩之间插入不同材料的部件，即需要附加部件本发明的焊接结构包括：由铁素体耐热钢制成的集管（2）; 多个管柱（4）焊接在管集管的外表面上，每个管桩具有弯曲部分，多个管柱（4）由奥氏体不锈钢制成，并焊接到通过使用镍基合金作为焊接材料的管头（2）。此外，环管（10）分别形成在管集管（2）的外表面上，以围绕管集管（2）的焊接部分; 连接部分（14）形成在所述环形行程（10）的内侧; 通过以连续的方式连接管短管（4）和接合部（14）的表面并通过使用镍基合金作为焊接材料进行焊接来形成对接槽，该管短管的直径基本上与接合部分。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式